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Results tagged with relay
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user 20702
A relay is an electrically controlled switch. Electromechanical relays use an electromagnet to activate mechanical contacts, solid-state relays use semiconductor switches.
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How to indicate a relay is activated?
I tried (and failed) the following:
12V buzzer in series with the relay - sound indication OK but relay is not being activated.
12V buzzer in parallel with the relay - open-collector does cut-off, sound … .
12V LED in parallel with the relay - visual indication OK, relay activated/deactivated OK, LED dead after one run (I suspect due to relay not having a suppression diode). …
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